The lack of water in five elements is the anhydrous component of heavenly stems and earthly branches. What is missing in the eight characters is added to the name, which is a one-sided understanding. This is a high misunderstanding of the restraint of the five elements. The five elements that are really needed must be what the Japanese Lord needs.
There is a related traditional naming introduction in my Baidu space, which is a naming method that combines the five elements of numerology with the Yijing, Yi, Yi, Sound, Fa, Gua, Form and Image. You can refer to and compare. I believe it will help you choose a name.